Samsung gear s3 frontier sensors not working after update

[userKOoBfSBP3Y]

My Samsung watch gear s3 frontier was working completely fine and suddenly it ask for the update which is Tizen 4 as soon as i have done the update my watch sensor all gone... No wrist turn wake up, no wakeup gesture, no step counts nothing working

Please advise me some solution.. Why update effect the sensors?

Please advise me a solution how I am supposed to fix this 

[useripvUL31zic]

Having the same issue, ive reconnected it and its just not tracking steps with any accuracy anymore, nice update

[userpdtt0bVu4q]

Im the same....tried test mode through the watch and every sensors dead.....not hardward issue as was fine before now but uodates killed it. Awaiting advice from mods as seems a common occurence and plenty previous posts with mods giving advice about test mode.

[userELl47W5UAQ]

Im also experiencing the same problem, tried switching it off and on but no change. Please assist